Road-leveling machine.



C. H. JONES.

ROAD LEVELING MACHINE.

APPLICATION FILED JAN. 13, 1914.

Patented May 25,1915.

6 SHEETS-SHEET 1.

LMEQ Q WITNESSES I ATTORN EY 01' H. JONES.

ROAD LEV ELING MACHINE. APPLICATION FILED IAN-1311914.

Patented May 25, 1915.

6 SHEETS- -SHEET 2.

WITNESSES 1% v ATTORNEY C. H. JONES.

. ROAD LEVELING MACHINE. APPLICATION HLED JAN. 13. 1914.

a M u 9 1. H 3 1 1 a 1H m m 5% w. 3 S r 9 y r T M E H d .66 t H 0U u a Pl mwaaa C. H. JONES.

ROAD LEVELING MACHINE. APPLICATION FILED JAN. 13. 1914.

l lw fio Patented May 25,1915.

6 SHEETS-SHEET '41.

J! i l %M E w (C. H. JONES.

ROAD LEVELING MACHINE. APPLICATION. FILED JAN.13,19M.

Qfififio Patented May 25, 1915.

6 SHEETSSHEET 5.

WWW. AW

C. H. JONES.

ROAD LEVELING MACHINE.

APPLICATION FILED MN. 13, 1914.

Patented May 25, 1915,

6 SHEETS-SHEET 6.

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, fifth, the provision of a yielding power shaft of the cutters CHARLES5' ONES, 0F GALVA, ILLINOIS.

ROAD-LEVELING Mncnrnn.

Specification of Letters Patent. Patented 25, 11.915

Application filed January 13,1914. Serial at. 811,882.

To alt whom, it may concern Be it known that I, CHARLEs H. JONES, acitizen of the United States, residing at Galva, in the county of Henryand State of Illinois, have invented certain new and useful Improvementsin Road-Leveling Machines; and I do hereby declare the follow ing to bea full, clear, and exact description of the invention, such as willenable others skilled in the art make and use the same.

This invention is a road leveling machine having for its object toprovide mechanism in a single machine, which will plane or cut awayparts of an irregular surface and so distribute the material of theroad, or the like, that a graded surface or roadway is produced bydrawing the machine over the surface to be treated. The adjustability ofthe parts of the device make it applicable to grading and levelingsurfaces other than roadways.

A further purpose of the invention is to provide means whereby themachine may be readily transported, the

ways, such as over bridges, without dismantling or disconnecting any ofits parts.

'lhe invention is characterized also by, first, the adjustability of theroad cutters or scrapers and means so positioned thereon that theyremain in a sharpened condition; second, the provision of dirt conveyorscarried by the scraper beams whereby the loose earth cut away from thesurface may be con ducted to a desired point on the road sur face andthere distributed and packed down as a part of the surface to grade theroad, the conveyors being positioned at a suitable point above thecontacting surface of the scraper beams with the ground to permit of theloose material to fill 1n the hollow places on the surface which isbeing operated upon; third, the provision of a plurality of cutterbeams, each in sections, whereby the pitch of the beams may be changedto regulate the grade of a road, the ends of the cutter beams orscrapers being connected to a tractive power, such as a traction engine,or team of draft animals, thereby preventing deviation allel with thedirection taken by the tractor; fourth, the operation of the conveyingmeans by power taken from the dirt compressing device mounted on themachine;

to which it appertains to trated in parts being con-.

tracted for passage through narrow passage- I front elevation of one ofthe Wedges.

or scrapers from a line par-.

orteam of animals chine overthe surface. At the--rear of the frame 1 ismounted a roller 5, the roller tioned in advance of the beam scrapers,all

of which parts of the machine are under the control of a singleattendant.

The invention consists in the combination of mechanism and details ofconstruction which will .be fully explained hereinafter, andparticularly pointed out in the appended claims. 7

bne embodiment of the invention is illusthe accompanying drawings, inwhich,

Figure l is a plan'view of the machine. Fig. 2 is a side elevation. Fig.3 is a sectional view through the frame shown in Fig. 1, looking towardthe rear of the device.

ig. 4 is an enlarged detail view of an end of a scraper beam. Fig. 5 isa detail view of a draft device which is positioned at the end of thescraper beams, the device being adjustable vertically. Fig. 6 is anenlarged detail view of thetwo sections of a scraper beami Fig. 7 is asimilar view of the sections placed at an angle to each other, with aseparating wedge in position. Fig. 8 a 1g. 9 is an enlarged detail viewof the power ransmission from the power shaft of a drive shaft,illustrating the flexible connection between the s'haft and theconveyers. Fig. 10 is a detail view of the springs of the drive shaft.Fig. 11 isan enlarged detail view of the rear portion of the machine,showing more clearly the roller. Fig. 12 is an enlarged detail View,partly in section, of a conveyer bracket. 7 Figs. 13 and 14 illustratemeans of roviding flexible joints for the conveyer s aft and driveshaft. Fig; 15 is an enlarged detail view, in side, elevation, of theflexible connection in the form of reversely positioned springs. ig. .16is a detail view in plan of the adjusting plate carried by the conveyerbracket.

In the embodiment of the invention disbeams,

beams is suitably mounted the truck 2 car'- rying the whee s ,3 fortransporting the frame. suitable draft device such as the tongue 4: isconnec tedto the t'ruck, which in turn'may be connected with the tractorfor transporting the mathe truck 2 and roller 5, are a plurality ofscraper beams shown in twosections, 8 and 8*, the section 8 being ofgreater length than the section 8. These beams are preferably angularlydisposed and mounted on opposite sides of the frame. The inner ends ofthe beams are preferably spaced apart,

and are connected by an angular plate 9,

the plate beingpivotally connected to the end of each beam section 8 topermit of pivotal-movement of the beams with rela tion to the frame. Themain portion of the plate 9 is shown in Figs. 1 and 3 as positionedsubstantially parallel with the roller 5, while the arms thereof areshown indined with relation to the main portion and directed toward theinner ends of the beams 8 to a position in front of the roller 5.

Each beam 8 is secured. to its shorter section 8 by a suitable tie plate10-, adapted to be bolted to one section, such as 8, and to have pivotalconnection with 'the other section such as 8, through the bolt 11. Thisplate 10, is provided with an arcuate slot 12 to permit of movement of abolt in the beam 8, when said beam is pivoted upon the bolt 11. Thispivotal connection of the beam 8 with relation to the beam 8* permits ofthe inclination of the beam 8 from the plane of the beam 8, andregulates the grading of'a road bed. The beams are maintained at thedesired angle with relationto each other,

by a suitable wedge 13 which'is adapted to be placed between theabutting ends of the beams 8 and 8, and to be bolted throughsuitable'apertures in said wedge 13, to the angle irons 14 secured tothe top edges of said scraper beams'88. By this'construction, the wedgeplate 13 may be placed at various positions with relation to the beams,and lock said beams in a predetermined angular position with relation toeach. other.

The beams 8-8, are preferably in the form of 'I-beams, as illustrated inFig. 4, the lower horizontal face of the beam being arranged to engagethe surface beneath it. To the front face of these I-beams, ispreferably secured a cutter blade 15, which is adapted to beadjustablymounted on the I-beam whereby the edge of said blade may befed downwardly past the projecting horizontal flange of the I-beam.:This adjust-.

ment is preferably eifectedi'by providing the slots 16 in the cutterblade with which cooperate the bolts 17. It is' preferable to make thecutter blades 15 slightly concave in cross section, and to constructthem of suitable material, such as steel, with the outer or front faceof harder metal than the rear face. Any wearing down or grindof softmetal, will operate to retain a sharpened edge due to the harder metalon one face. As the cutting edge wears, the blades '15 may be readjustedwith relation to the scraper beams. These bolts serve as heads also toengage the vertically disposed bolts 18 whieh have their screw threadedends pass through the upper flange 19 of the I-beam, to which suitableadjusting nuts maybe secured to, raise or lower the cutter blade fromthe upper end of the I-beam when desired. It will be understood that thecutter blade 15 may be adjusted by] either of these devices, and thatthe slot 16 may be omitted from the blade, and that the I-beam may beslotted instead, to permit of such adjustment. The outer ends of each ofthe scraper I-beams 8 are connected with a suitable beam 20, which maybe positioned on the tractor. One means of connecting these scraperbeams is shown by the link rods 2122, the former of which is shownprovided with flexible connection to 90 the beam 20. The rod 22 is shownin Figs. 1 and 2 connected in a suitable manner to an end of the scraperbeam, which. rod is pivotally mounted at 24 near the base of the beam.In Fig. 2, a lever 25 is illustrated to elevate the plane or draft ofthebeam, whereby, when the lever is moved to a posi- 7 tion from thevertical, the crank arm 26 will be raised'upwardly to elevate the draftrod 22.

In Figs. 4 and 5 there is illustrated another embodiment of the draftfeature, wherein a bracket plate 27 is mounted on the I-beam. in anysuitable manner, said plate being slotted as at 28 to permit of the 105vertical movement of a coupling 29 in said slot. J ournaled near thisplate 27 is a shaft 30 havinga crank arm 31, which is connected to thecoupling 29 by a link 32. This shaft 30 is adapted to be rotated by alever 33 having means to engage a sector 34 to retain the lever 33 andshaft 30 in a predetermined position, thereby determining the elevationof the draft rods 22.

The frame 1 is provided with a suitable. 115 platform 35, and also withasuitable upper framework'comprising the upright stand ards 36, 37 andthe inclined standards 38-39. The inclined standards 38 are securedinany suitable manner, such as by 120 bolting, to the frame 1, and havetheir upper forward ends bent at an angle to bring the" standard to ahorizontal plane, and thence at right angles to form'a support 42 for asuitable beam 43. This beam is provided at its outer ends with pulleys44, for a purpose to be referred to hereinafter. plurality of shafts 45arranged parallelto each other, are mounted on the upper framework, oneend of the shaft being jeurn led no messes 8 into the beam 43, while theother end of the shaft is journaled on the upright standard 37. Eachshaft is provided with a drum 46 near the forward end thereof andadjacent the beam 43, while at its opposite end there is providedsuitable means such as a wheel 47 for rotating the shaft, said wheelbeing conveniently positioned with relation to the platform. Suitableflexible connection, such as a chain or rope 48, is employed between theouter ends of the I-beams 8 and the drums 46, said connection beingpassed through the pulley 44 and through a guide block 49 carried by therod 22. This guide block 49 serves to maintain the flexible connection48 at a suitable point in advance of the I-beams, which will prevent anyconflict with the line of draft through the connections 21-22. Theshafts 45 may be rotated to coil the flexible connection 48 on the drums46 to change the radial position of the beamswith relation to the frame,said beams being contracted toward the truck by means of their pivotalconnection at their inner ends with the plate 9. This feature will befound of advantage in drawing the machine over narrow roads, or overbridges. It will be also observed that the device is capable ofindependently operating either of said scraper beams 8, thereby gradingone side Ofa road only, or a narrow road. Near the end of the shorterI-beam 8, adjacent a point where itis coupled to the beam 8, there isshown positioned, a transverse supporting beam 50,. which may besuitably connected to the scraper I-beam. To the pper side of thissupporting beam 50, is mounted an areuate staple 51, having an angulararm at one end thereof. A suitable anti-friction device such as a roller52, is adapted to ride on the under face of this Staple 51, said rollerbeing connected by flexible means 53 to a crank arm 54, on a shaftadapted to be operated by a lever 55, the lever being provided with asector 56 to maintain the parts in the desired POSltlOIln This leveroperates to raise or lower the scraper section 8 with relation to thesurface to be treated, and the flexible connection 3 together with itsroller 52, also permits f a swinging of this section of the scraperbeams 8 with relation to the frame.

Near the outer end of the longer scraper eam 8, there may be providedsuitable means to elevate the beam from the surface when transportingthe device over a road which is not to be treated. Referringparticularly to Fig. 4, this elevating and c onveying mechanism is shownas compris ng a caster wheel 57 mounted on an axle carried by theupright frame 58. The wheel 57 and frame 58 are provided also with aforked arm 59, the vertical straight end of which is adapted to passthrough suitable means, such as a beam 60, or its equivalent, Secured tothe top face of the I-beam 8, the arm 59 being vertically movable withinthe beam 60 through an aperture provided therein. -An eye-bolt 61 may beprovided on the beam 60, to be engaged by an end of a lever 62 adaptedto be fulcrumed at 63 on the upright member 58, said lever 62 having asuitable plunger rod to engage the teeth of the sector 64, whereby thelever may be moved to a desired position to throw all the weight of theI-beam 8 upon the caster wheel through its member 58, said wheel beingfreely movable within the aperture of beam 60 to follow the direction ofmovement of the machine over the surface. By this arrangement the beam 8may be employed'to exert its full weight against the surface to betreated, or the caster wheel 57 may bear some of the weight of the beam,a feature which will be readily understood by those skilled in the art,when treating roads of different ma terials.

Suitable conveying devices-are mounted on the scraper beams 8+8, and inthe drawings I have illustrated these conveyers as screws 65, the screwsbeing mounted on suitable brackets 66 carried by the beam 8, al-

though the screws extend beyond said beam,

8 and across the surface of the beam 8. These brackets 66 are preferablyadjustably mounted on an inclined surface 67 of the support 27 carriedby the beam 60, whereby the screws may be placed at different elevationswith relation to the I-beam. By mounting the screws solely on one of thebeams 8 or 8 the other beam is permitted to be moved to an angle totreat the surface of a road, as previously described.

By reference to Fig.9, it will be observed that the ends of the screwsare connected to a drive shaft 68 by suitable flexible connection, suchas the springs 69. It is preferred to use the springs as a connectionbetween the shafts 68 and the screws 65 because of the change in theangle which is frequently made betweenthe I-beams 88 and the frame.These springs 69 are preferably composed of an outer open wound largerspring, and an inner concentri'r closely wound spring: The open woundouter spring 70 is employed as a drive spring, while the inner spring 71is employed to support the outer spring in its operative position. Thesprings adjust themselves to the positions of the scrapers and screws,and for that reason are preferred to gears. This drive shaft ispreferably positioned parallel with the plate 9 connecting the beams 8,and in the space left between the ends of said beams.

Power is transmitted to the drive shaft 68, as follows: A sprocket wheel72 is mounted on the end of the shaft 6, carried by the roller, totransmit power through the medium of a sprocket chain 73 to a sprocket 4shaft 74 mounted transversely of the frame members 1. The shaft 7 i isgeared to an intermediate shaft 75 in any suitable manner,

which latter shaft 7 5, is mounted on a plane below that of the shaft74, and preferably in the rear thereof. On this shaft 75 is mounted aswinging plate 76, which is bifurcated at each end thereof to receive anupper sprocket wheel 77 and a lower sprocket wheel 78, said sprocketwheels be- ,ing connected by the chain 7 9. The drive shaft 68 is journaled in the lower end of said plate 76, and j the reverselypositioned springs 71 are mounted on each side of said plate 76. Themovability of the plate 76 on shaft 75, permits of the variousadjustments of the I-beams 8-8, without disarranging thepower'connection with the roller. At a suitable place between theopening formed by the ends of the I-beams 8 and the roller 5,'isYmou'nted a spreader 80, which is mounted for slight movement at therear of the frame 1, said-spreader 80. being connected to the beams 8 bysuitable resilient connection 81. The lower end of the spreader may beprovided with a series of resilient fingers 82, said fingers operatingto distribute the material passing through the space left'between theends of the beams 8, I

and also to break up the large clods of dirt prior to engagement by theroller 5. If desired, the 'roller 5 may be provided with a suitablescraper 83 adapted to engage the surface thereof and to be maintained incontact withthe surface of the roller 5 by a spring 84: mounted on theframe 1.

The I-beams 8 are preferably connected is changed, as in rounding acurve, at which time the scraper on the right side of the machine willbe permitted to make a wide sweep, while that on the left side of themachine can' be restricted in its movements, should the curve in theroadway be made to ward the left. 4

At a suitable point between the truck and the scraper beams 8-8, andunder the frame, is positioned an auxiliary scraper shown as comprisinga plurality of scraper beams 86, preferably of the same form as thebeams 8-8, although said beams 86 may be of less height and weight, ifdesired. The beams 86 are preferably connected at one end by a plate 87,which I have termed a wear plate, said plate being bolted to both ofsaid beams. The other ends of the beams 86 are diverged to form asubstantially triangular scraper or plow, the free ends of which beams86 are preferably connected to the scraper beams 8 by a link 88, whilethe forward end or apex of the auxiliary scraper is preferably connectedto the central portion of the truck 3 by flexible connection 89. Thisconnection, as stated, is preferably in the central line of draft,although it may be otherwise connected if found desirable. The aux liaryscraper serves to preliminarily grade the central portion of the roadand to deflect the material cut away toward the conveyers or screws '65,where it is again conveyed toward the central portion of the machine tobe distributed by the spreader and packed down by the roller 5.

In operation, the beams 88* are set at proper angles with relation tothe frame 1, to cover the width of a road to be graded, and the scraperbeam 8 is set at the proper angle with relation to the scraper beam 8.for the surface grade of the road. The forward movement of the machinewill cause power to be transmitted from the shaft 6 through theshafts 75, 68, and the 'flexible connection to the reversely 1 operating screws65, whereby the loose earth is fed from the front of the scrapers 8-8 tothe space left between the inner ends of the 1 scrapers 8 where thespreader 80 operates to break up the large particles of loose earth anddistribute the same in front of the roller 5, which compacts the earthin the center of the roadway. The auxiliary scraper 86 serves to levelthe roadway in advance of the main scraper 8, and to deflect thematerial so cut away, into engagement with the plane like blade on thescrapers and to be conveyed by the screws 65. In turning curves inaroadwav, the flexible connections 85 with the beams 8 and truck 2, willpermit one beam to describe a wider arc than the one on the oppositeside, according to the direction in which the turn is made. The draftrods 22 being adjustable with relation to the height of the tractor, bymeans of the lever 25, or the lever 34, which may be employed in lieu ofthe lever 25, insures the proper cutting angle of the scraper beams 8with relation to the frame of the machine. I

Having thus described the invention, what I claim as new and desire-tosecure by Letters Patent is:

1. In a device of the class described, a frame, a sectional beamangularly disposed with relation to said frame, one section of said beambeing adjustable vertically with relation to its other section, and aretaining wedge adapted to be secured between the connected ends of thebeam sections to maintain said, adjustable sections at the desiredangle.

with relation to the other section, a wedge to maintain the adjustablesection in a predetermined position, means to connect the free end ofthe adjustable beam with a tractor, and means at the free ends of saidadjustable beam to'regulate the line of draft from thetractor to thebeam.

3. In a road machine, a frame having, a

scraper beam adapted to be positioned anguable by movement of said leverto change the line of draft scraper beam.

4. In a road machine, a frame, a truck positioned at oneendof the frame,a roller from the tractor to the positioned at the opposite end of theframe,

' other sectio a plurality of scraper beams carried by said frame,flexible connections between said scraper beams and said truck, anauxiliary scraper connected to the truck and positioned beneath theframe for independent movement with relation to the frame, and meansyielding to connect theauxiliary scraper with said. scraper beams.

5. In a road machine, a frame, a sectional scraper beam carried thereby,means carried by said frame for elevating the inner section of saidscraper beam, means positioned on the oiiter section of the scraper beamfor elevating said section from contact with the surface to be treated,and means adapted to be positioned between the ends of said beamsections to retain one beam section at a predetermined position withrelation to the 6. In a road machine, a plurality of scraper beams eachhaving a plurality of adustable sections, a plurality of brackets, onesecured to each section of each scraper beam, journal bearingsadjustably mounted on said brackets, conveyer screws carried by eachscraper beam and mounted in said journal bearings to conform to theadjustment of the sections of the scraper beam, and means to connectthescrews for simultaneous movement.

7. In a road machine, a frame, a plurality of angularly disposedsectional scraper beams so mounted on the frame as to leave a spacebetween them beneath said frame,

one section of said scraper beam being adjustable with relation to theother section, a power shaft mounted on the frame in a space between theends of said scraper beams, conveyer screws carried by the adjustablesections of said scraper beams, and means to connect said power shaftwith each of said conveyer screws.

8. Ina road machine, a frame, a plurality of angularly disposedsectional beams so mounted on opposite sides of the frame as to a leavea space between them beneath the frame, a yieldable drive shaft carriedby said frame substantially in alinement with the space between the endsof said scraper beams, one section of each scraper beam being adjustablewith relation to the other section, conveyer screws mounted on theadjustable section of the scraper beam, and a flexible connectionbetween the drive shaft and each conveyer screw.

Y 9. In a road machine, a frame, a plurality of sectional beamsangularly disposed on opposite sides of the frame, conveyer screws carried by each of said scraper beams, a yieldable hanger plate carried bysaid frame, a drive shaft carried by said hanger plate, and flexibleconnections between the drive shaft and said conveyer screws.

10. In a road machine, a frame, a plurality of scraperibeams carriedthereby, a yieldable hanger plate suspended from the frame, a drivingshaft carriedthereby, a plurality of conveyer screws carried by saidbeams, and flexible connection between said driving shaft andsaid'conveyer screws, said flexible connection comprising a helicalspring.

11. In a road machine, a frame, a scraper beam carried thereby, a screwmounted on said scraper beam, a yieldable drive shaft suspended fromsaid frame, and a flexible connection between the drive shaft and theconveyer screw comprising an inner helical spring and an outer helicalspring.

12. In a road machine, a frame, a plurality of scraper beams carried bysaid frame, conveyer screws carried by each of said scraper beams,'ayieldable drive shaft positioned between said scraper beams, andconcentrlc inner and outer helical springs connecting said drive shaftwith each of said conveyer screws.

13. In a road machine, a frame, a plurality of scraper beams carriedthereby, conveyer screws cooperating with said scraper beams, a driveshaft carried by said frame, and a flexible connection between the driveshaft and said conveyer screws, said flexible connection comprising anopen wound outside helical spring, and a concentric close Wpund ,JI'ISidB helical spring.

. 14. In a road machine, a frame, a plurality of scrapers carriedthereby, a power shaft carried by said frame, a drive shaftyieldably'mounted on said frame, means to connect the power shaft withthe drive shaft, a plurality of conveyer screws, and flexible connectionbetween the drive shaft and the conveyer screws.

15. In a road machine, a frame, a plurality of scrapers, a plurality ofconveyer screws, a roller carried by said frame, a shaft carried by saidroller, a power shaft mountedv on the frame, a yieldable drive shaftsuspended from said frame, means to transmit power from the roller shaftto the power shaft, means to transmit power from the power shaft to thedrive shaft, means to support said conveyer screws of the scraper beamson a plane above the surface to be operated upon, and flexible means toconnect said conveyer screws with the drive shaft.

16. In a road machine, a scraper beam having a horizontally flangedbase, a knife blade extending the full length of said scraper beam andadjustable on said beam,

said knife blade being composed of hardened material on one surface andsofter material on another surface thereof, where-- by the wear upon theblade will serve to retain it in a sharpened condition.

17. In a road machine, a scraper beam comprising a plurality of sectionsadapted to bevconnected end to end near the bottom thereof, to permitthe sections to be moved apart at the top thereof, a plurality ofretaming angle irons secured to the'top of each beam, and an adjustablewedge adapted to be positioned into engagement with the adapted tooperate upon material passing throug the space between said scraper easaid-spreader being provided with a plurality of resilient fingers, andres means connecting the spreader Wi the scraper beams.

19. In a road machine, a frame, a f pivoted track, a plurality of ang ly posed scraper beams mounted on PP sides of the frame, a draft beam sectransversely. to each of said scraper beams,

flexible connections extending from each f said draft beams to anopposite side of the conveyers' carried by Said frame, a spreader 1ncooperative relation to said conveyers and truck, said connectionscrossingeach other at a point beneath the frame, and means to maintainsaid scraper beams at the desired angle with relation to the frame.

20. In a road machine, a frame, a truck,

a plurality of angularly disposed scraper beams so mounted on oppositesides of the frame as to leave a space between them, flexible connectionbetween the truck and each of said beams, an auxiliary scraperpositioned beneathsaid frame and having diverging arms overlapping thespace between the inner ends of said scraper beams, flexible connectionbetween the auxiliary scraper and the truck and pivotal connection be-.tween the auxiliary scisaper and said scraper beams.

21. In a road machine, a frame, a scraper beam adjustable with relationto said frame, said scraper beam being constructed in sections, onesectionbeing adjustablewith rela tion to the other section, meansoonnectm'g the scraper beam with a tractor, and means positioned nearthe end of the adjustable Scraper beam to change the lineof draft fromthe tractor to the scraper beam, said adjustable means comprising acrank shaft mounted on the scraper beam, a bearing plate adjacent thecrank shaft, a draft device vertically movable in said bearing plate,

and a lever for moving the device to the desired angle With relation tothe bearing plate.

22. In a road machine, a frame, a scraper beam pivotally mountedthereon, a draft beam positioned transversely on said scraper beam, anelongated staple mounted on the 'draft beam and positioned transverselyof the scraper beam, and meanson the frame to slidably engage saidstaple.

23. In a road -machine, a frame, a platform, an angularly adjustablescraper beam mounted on said frame, a draftbeam on said scraper beam, anarcuate staple secured to the draft beam and elevating means carried bysaid platform and having slidable connection With said arcuate staple.

In testimony whereof, I afiix my signa ture, in presence of twowitnesses.

CHARLES H. JONES.

' Witnesses:

DALE N. WEST, E. L. GOENIN.

